Answers

2014-12-01T16:31:00+08:00
Throw is the present simple tense
threw is the past simple tense
thrown is the past participle
throwing is the progressive form
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2014-12-01T16:54:53+08:00
  PRESENT     PAST     PAST PARTICIPLE           PROGRESSIVE FORM

1.) throw          threw            thrown                             throwing




>>>hope its help<<<<
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